agileDownloads Pro aswell as agileVideos got today a important compatiblity update. This update fixes an issue that appeared in combination with Joomla 4.1 and later. The affected part was the option to secure a folder / grant access only to registered users. For both Modules Bugfixes got released today that solves this issue. If you are using agileVideos and / or agileDownloads Pro on your Joomla 4 site and have used our folder protection system you need to disable & re-enable the protection for each folder.
Sidenote: The folder protection in my modules would not exist without the great work of David Jardin: GitHub for readmedia